Spark-Plasma-Sintering Condition Optimization for Producing Transparent MgAl2O4 Spinel Polycrystal
Spark-Plasma-Sintering Condition Optimization for Producing Transparent MgAl2O4 Spinel Polycrystal
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DOI：
10.1111/j.1551-2916.2009.03074.x
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发表时间：
2009-06-01
影响因子：
3.9
通讯作者：
Hiraga, Keijiro
中科院分区：
文献类型：
--
作者：
Morita, Koji;Kim, Byung-Nam;Hiraga, Keijiro
通过控制1300摄氏度的加热速率，由于晶粒快速生长而引起的残余孔隙的合并和第二相的沉淀会降低透明度。本研究表明，虽然高的加热速率已被视为SPS处理的主要优点，低的加热速率是非常有效的，即使在低温和短的烧结时间，在尖晶石中获得高的透明度。
By controlling the heating rate at 1300 degrees C, the coalescence of the residual pores and the precipitation of second phases, which are caused by rapid grain growth, degrade the transparency. The present study demonstrates that although the high heating rates have been regarded as a primary advantage for the SPS processing, the low heating rate is highly effective in attaining a high transparency in the spinel even at low temperatures and for short sintering times.